Envelope shaped as a drink cup



FIG. 1 is a perspective view of an envelope shaped as a drink cup, showing my new design;

FIG. 2 is a front elevation view thereof; the rear elevation view is a mirror image thereof;

FIG. 3 is left-side elevation view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for an envelope shaped as a drink cup, as shown and described. 